Percolator construction.



L. H. WILKINSON. PERGOLATOR GONSTRUCTIEQN. APPLIOATION FILED NOV. 13, 1913.

1, 1 1 6,9462, v Patented Nov. 10, 1914.

2 SHEETS-SHEET 1.

3 wue wtoz L. H. WILKINSON. PERGOLATOR CONSTRUCTION.

APPLICATION FILED NOV. 13, 1913.

1,116,962. Patented Nov. 10, 1914.

2 SHEETS-SHEET Z.

WMe/.mao vw@ ntoz 80 tion.

sTArEs PATE'NT- OFFICE.

iOUIS H. WILKINSON', 0F DIEMEN, CUNNETICUT, ASSIGNOI ll`E ,NANNI-NG', IhBOW- MAN COLNLPANI, F MERIBEL@ CONNECTICUT, .l CQRPUEATION 0F CONNECTICUT.

rnneona'ron dorNs'rmIcrIoN.

To all 'whom tm/ay concern: p

Be it known that I, Louis H. WILKINSON,

a citizen of the United States residin at Meriden, New Haven county, tate of on- 6 necticut, have invented certain' new and useful Im rovements in lercolatory Construction, o which the following is; a full, clear, andv exact description. Y j

This invention relates to an improvement I@ in the construction of percolator pots and more particularly to means for feeding the liquid from the main body ofthe pot to theA .2b a percolator pot and its heating chamber and tube as is necessary to disclose an embodiment of the present invention.v Fig. 2

is a top plan view of the parts shown in Fig.

1. Fi s. 3, 4 and 5 are details of construcf ig. 6 shows in vertical section a different form of tube and plug, Ahaving a modified form of valve -applied thereto. Figs. 7 and 8 respectively are top and bottom planviews o the parts shown in Fig.

6. Figs. 9 and 10 are views of details of the modiied construction of valve.

In the drawings, 1 designates the portion of the body of a percolator pot at its bot Y tom to which the usual heating base 2 is secured by means of a nut 3. This heating base is hollow and. is provided with a heating chamber 4 therein designed to receive and heat li uid fed thereto from the body of the pot. T is heating base below the chamber 4 has an enlargement 'or disk 5 designed to rest adjacent a source of heat, the enlargement increasing the heating surface and the heat therefrom being conducted directly to the heating chamber 4 as is usual in this type of pot.

6 denotes the usual percolator tube, preferably thickened adjacent its lower end as at 6 to form a strong construction, the lower end of thisv tubeA extending through a hollow plug or disk 7 and being securely affixed speci-tostiunofLetters Patent. Appneutn met November 1s, isis. semi No. somos;

Patented Nov. 10, 1914.-

thereto as by sweating. This plu has the usual' flange 7"L a'tfits upper end an is preferably slightly tapering to lit snugly .within the heating chamber`4, the bottom of the lug bemgspaced substantially above the ottcm of the heating chamber and the-plug serving to some extent to insulate the' heating chamber from the body of the' ot, as

uisual. One or more4 tubes 8 extend rough tne plug with: their upper and lower ends communicating respectively with the main body of the pot above the lug and the heating chamberbelowthe lhg, this tube or tubes serving as ymeans or conducting liquid from the main body ot the pot to the heating chamber. In: orderr to control" the iiow of liquid' from these feedl passagea provide the following valve construction. The lower enlarged end 6 of the tube is preferably flush with the bottom face of the plug 7 i Thislower end is interiorlythreaded as at 9 and is designed to receive the upper threaded end of -a hollow tube 10, which tube is provided with a stop shoulder 12 at the end of the sweated portion, which stop "8@ shoulder engages theend of the percolator tube and spaces a second shoulder 13 from the lower end of this tube and from the b'ottom face of the plug. This second shoul# der 13 forms a seat for a valve disk 14 which 86 is seated over the tube 10 and on its shoul# der when the u per threaded end 11 of the tube is screwe intothe lower end of the percolator tube. This valve disk is of suliicient diameter to cover fully the openings from the-inlet passages at the bottom of the plu and the thickness of this disk relative to t e distance. between the shoulders 12 and 413 is such as to permit movement of the disk toward the tubes 8 to close the same and 9`6 away from said tubes to open the same and permit water to l'ow into the heating chamber. The valve diskv 14, being guided and retained on the tube, will normally tend to rest on the shoulder 13 through ravity, permitting liquid from the main body of the pot to enter the heating chamber through the feed tubes 8. Assuming that the heating chamber 4 has been lled with liquid and the same is being heated, the pressure generated in the chamber through the heating of the liquid will force the valve disk 14 up against the openings of the tubes 8, closing the same and preventing further iiow of liquid from the pot body into the heating 11g chamber until the heated liquid has ascended the percolator tube in the usual manner. The hollow tube l0 forms in effect a portion or continuation of the percolator tube below the plug so that as the liquid becomes heated, it will rise through the tube 10 and through the percolator tube 6 in the usual manner. When thepressure in the heating chamber drops through the dischar e of the heated liquid therein, fresh liquid rom the main pot bodywill enter through the tubes 8 and will again fill the heating chamber and be heate the valve disk 14 rising and closing the inlet openings as 'before and the process .continuing in Vthis manner. The

valve'disk 14 being of substantial area is readily controlled by the action of the `heated liquid in the heating chamber and will readily respond to fluctuations in the pressure within said chamber so that liquid from the main pot body will be fed into the heating chamber whenever the pressure therein drops any` substantial amount. This will enable the heatin chamber to be continually filled with liquidgandto have a continuous supply of freshliquid from the main reserof the voir or pot body fed thereto as the contents eating chamber are 4ejected therefrom in quantities insuliicient. to exhaust the capacity of the heating chamber. This it will be seen will maintain a heated body of liquid in the heating chamber at all times as it is Anot necessary to eject the entire contents of the heating chamber before .more liquid can be fed thereto.

The form of plug heretofore described is particularl adapted 'for percolator pots of the ty e w erein the heatin medium is separate rom the pot bod en the heating medium is carried by t e pot body, as in the case of an electric percolator, a slightly different form of plu is employed and preferably a slightly di erent form of valve construction. In Figs. 6 to 10 I have shown such a form of plug and valve construction. Referring specifically to these figures of the drawing, 6b designates the percolator tube having an enlarged lower end 6c as by sweating thereon another tube. The inner tube 6b extends through a hollow plug formed of complemental disks 15-16 united at their outer edges, the disk 15 being provided with a central boss 15. Adjacent this boss the `disk 15 is countersunk and hollow tubular rivets 17 are inserted to secure the inner and outer disks together at this pointJand also. to provide a liquid feed passa e'gthrough the hollow rivets whereby liqui v'may be fed from the main pot body to the heating chamber. It. is unnecessary to describe herein the detailed construction of the base-of an electric percolator inasmuch as it is well known in the art, the hollow plugformed by the disk 15-16 seat' within a heating chamber formed in the ase of the pot body in a manner similar to that shown and described in connection with Fi 1 of the drawings. The under disk 16 is ished inwardly and upwardly to rovide a space for a controllin valve for tlie inlet opening 17. To this en the percolator tube b extends below the under face of disk 15 and has its lower end ex.- teriorly threaded to receive a sleeve 18 having its interior correspondingly threaded and provided at its lower end with an annular inset flange 19 designed to engage the lower end of the percolator tube 6b and limit the lupward movement of the sleeve 18 thereon so as to position the. up er edge of said sleeve the proper distancebelow the lower `ends of the inlet opening 17. vBefore the sleeve 18`is applied to the lower end of the percolator tube, a valve disk 2O is seated over said ltube end and rests on the upper edge of sleevev18 as the latter screws up on the percolator tube. The flange 19, when it engages with the lower end of the percolator tube, positions the valve disk 20 so that when resting on the upper edge of the sleeve 18, it is away from t 'e inlet opening 17 and will lpermit liquid to iow from the main pot ody into the heating chamber below the lug. When, however, sufficient pressure as been enerated in the heating chamber because o the heated liquid therein, the valve disk 20 will be lifted to close these inlet openings until the pressure has been diminished by the heated liquid risin in the percolator tube, whereupon the va ve disk will drop and admit suicient water from the main pot body to continue the heatin operation as heretofore described. It wi be, of course, understood that the thickness of the valve disk 2O relative to the distance between the upper edge of the sleeve 18 and the lower ends of the tubular rivets 17 will be regulated to permit this upward and downward controlling movement.

While I have herein described a preferable embodiment of my invention, I desire it understood that various changes in structure and in the relative arrangement of parts are still possible within the spirit of the invention and the scope of the appended claims.

What I claim, therefore, and desire to secure by Letters Patent is:

1. In a ercolator, the combination of a main cham er, a heating chamber at the base thereof, a'percolator tube, a plu carried thereby adJacent its lower end a apted to vseat in said heating chamber and closin the space between said main and heating c ambers, said tube extending through and below said plugand into said heating chamber, said tube having a valve supporting seat thereon below the under face of said plug within said heating chamber, said plug having a liquid inlet assage therethrough communicating direct y with said main. and heating chambers, and a disk valve supported on said tube seat below said plug and within said heating chamber and in line with said liquid inlet passage, said disk sliding freely on said tube to open and close said passage.

2. In a percolator, the combination of a main chamber, a heating chamber at the base thereof, a percolator tube, a plug carried thereby adjacent its lower end adapted to seat in said heating nhamber and closing the space between said main and heating chambers, said tube extending through and below said lug and into said heating chamber, said tu e having a valve supporting seat thereon below the under face of said plug within said heating chamber, said plug having a liquid inlet passage therethrough communicating directly with said main and heating chambers, and av disk valve supported on said tube seat below said plug and within said heating chamber and in line with said liquid inlet passage, said disk sliding freely on said tube to open and close said passage, and being of substantial area relative to the cross section of the heatingv chamber.

3. In a eroolator, the combination of a main cham er, `a heating chamber at the base thereof, a percolator tube, a plug ycarried thereby adjacent its lower end seating in said heating chamber and closing the space between said main chamber and said heating chamber, said percolator tube extending through said plug and having a tubular sleeve section secured to its lower end and positioned below said plug and within said heating chamber, said section having thereon a valve supportin shoulder spaced from the under face of 'sai plug, said plug having a liquid inlet passage therethrough communicating with. said main and heating chambers, and a disk valve normally resting on the supporting shoulder of said section in line with said liquid inlet assage and of substantial area relative to t e cross section of said heating chamber.

' LOUIS H. WILKINSON.

Witnesses:

E. A. FARB, GEO. E. fSAvAer.. 

